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+/*
+ * Copyright (c) 2010-2011, Pieter Noordhuis <pcnoordhuis at gmail dot com>
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Redis nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __HIREDIS_AE_H__
+#define __HIREDIS_AE_H__
+#include <sys/types.h>
+#include <ae.h>
+#include "../hiredis.h"
+#include "../async.h"
+
+typedef struct redisAeEvents {
+ redisAsyncContext *context;
+ aeEventLoop *loop;
+ int fd;
+ int reading, writing;
+} redisAeEvents;
+
+static void redisAeReadEvent(aeEventLoop *el, int fd, void *privdata, int mask) {
+ ((void)el); ((void)fd); ((void)mask);
+
+ redisAeEvents *e = (redisAeEvents*)privdata;
+ redisAsyncHandleRead(e->context);
+}
+
+static void redisAeWriteEvent(aeEventLoop *el, int fd, void *privdata, int mask) {
+ ((void)el); ((void)fd); ((void)mask);
+
+ redisAeEvents *e = (redisAeEvents*)privdata;
+ redisAsyncHandleWrite(e->context);
+}
+
+static void redisAeAddRead(void *privdata) {
+ redisAeEvents *e = (redisAeEvents*)privdata;
+ aeEventLoop *loop = e->loop;
+ if (!e->reading) {
+ e->reading = 1;
+ aeCreateFileEvent(loop,e->fd,AE_READABLE,redisAeReadEvent,e);
+ }
+}
+
+static void redisAeDelRead(void *privdata) {
+ redisAeEvents *e = (redisAeEvents*)privdata;
+ aeEventLoop *loop = e->loop;
+ if (e->reading) {
+ e->reading = 0;
+ aeDeleteFileEvent(loop,e->fd,AE_READABLE);
+ }
+}
+
+static void redisAeAddWrite(void *privdata) {
+ redisAeEvents *e = (redisAeEvents*)privdata;
+ aeEventLoop *loop = e->loop;
+ if (!e->writing) {
+ e->writing = 1;
+ aeCreateFileEvent(loop,e->fd,AE_WRITABLE,redisAeWriteEvent,e);
+ }
+}
+
+static void redisAeDelWrite(void *privdata) {
+ redisAeEvents *e = (redisAeEvents*)privdata;
+ aeEventLoop *loop = e->loop;
+ if (e->writing) {
+ e->writing = 0;
+ aeDeleteFileEvent(loop,e->fd,AE_WRITABLE);
+ }
+}
+
+static void redisAeCleanup(void *privdata) {
+ redisAeEvents *e = (redisAeEvents*)privdata;
+ redisAeDelRead(privdata);
+ redisAeDelWrite(privdata);
+ hi_free(e);
+}
+
+static int redisAeAttach(aeEventLoop *loop, redisAsyncContext *ac) {
+ redisContext *c = &(ac->c);
+ redisAeEvents *e;
+
+ /* Nothing should be attached when something is already attached */
+ if (ac->ev.data != NULL)
+ return REDIS_ERR;
+
+ /* Create container for context and r/w events */
+ e = (redisAeEvents*)hi_malloc(sizeof(*e));
+ if (e == NULL)
+ return REDIS_ERR;
+
+ e->context = ac;
+ e->loop = loop;
+ e->fd = c->fd;
+ e->reading = e->writing = 0;
+
+ /* Register functions to start/stop listening for events */
+ ac->ev.addRead = redisAeAddRead;
+ ac->ev.delRead = redisAeDelRead;
+ ac->ev.addWrite = redisAeAddWrite;
+ ac->ev.delWrite = redisAeDelWrite;
+ ac->ev.cleanup = redisAeCleanup;
+ ac->ev.data = e;
+
+ return REDIS_OK;
+}
+#endif